Pollen tube entered one synergid, and released two sperms between egg and central cells.
精子脱掉细胞质鞘后,形成精核与细胞质体;
Pollen tube entered one synergid, and released two sperms between egg and central cells.
精子脱掉细胞质鞘后,形成精核与细胞质体;
Vacuoles in the synergids tended to concentrate mainly in the chalazal region.There was a peak period of lipid formation in the two synergids.
三是助细胞与珠胚囊壁有些部位出十分明显的,个内有大型嗜锇体。
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